So by the very nature of the subject visualization can be only partial--only "the shadow of the blessed realm," can be shown. But what human nature can do, even if its feat seems solitary and unique, Dante has accomplished in a failure which constitutes the most wonderful achievement in the domain of the sublime in literature, an achievement leaving us with a sense of his own ineffable bliss and of the inexpressible joys of the Elect--an achievement which came to pass, say some readers, because his poem is an account of a supernatural vision--and Dante hints that he thinks he was so favored, or because it is a work to which both heaven and earth have set their hand, showing him, as Emerson observes, "all imagination," or, as James Russell Lowell says, "The highest spiritual nature which has expressed itself in rhythmical form." There are two methods of representing man's supreme happiness, relative and absolute: one is to depict nature at her best, untouched by sin, and to show man free from every defect and blemish, in the full perfection of his being. Naturally the imagery in this case is the imagery born of finite human experiences. The other method describes, as we said, not scenes of happiness but transcendent conditions of the soul as it is brought into ultimate communion with Supreme Goodness--the finite possessing and enjoying the Infinite. Here the human mind, let us repeat it, finds earthly images powerless to translate its thought, for it hath not entered into the heart of man to conceive the glory of the spiritual world. These two methods Dante follows successively. His Eden on the summit of Purgatory is literally the earthly Paradise of Adam and Eve. It is pictured in moving imagery as man's "native country of delights," a "lofty garden" of ineffable loveliness, high above all the physical and moral disturbances of earth, its waters, its winds, its flowers and its music all coming from supernatural sources, its bliss springing from the perfect harmony of man's animal, intellectual and spiritual powers in full and perfect accord with reason. It is Paradise Regained by man's climbing the mountain of Purgatory, and its significance is understood if we remember that Dante would teach us that the present life can be made dual, a life worth while in itself, full of service and godliness as well as a preparation for the unending life of Heaven.